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Tax research
with real citations

Ask your AI assistant any tax question and get answers backed by the Internal Revenue Code, Treasury Regulations, IRS Publications, Revenue Rulings, and IRS Notices. No more hallucinated citations.

Works with Claude & ChatGPT 20 searches/day free Real cited sources
Claude + taxmcp.io

What are the requirements for the home office deduction?

Under §280A, a home office deduction requires the space to be used:

  1. Regularly and exclusively for business (§280A(c)(1))
  2. As your principal place of business, or where you meet clients (§280A(c)(1)(A-B))
IRC §280A Reg. §1.280A-2 Rev. Rul. 94-24

What about the simplified method?

Works inside the AI tools you already use

Claude Desktop
ChatGPT
Any MCP Client

The Problem

Tax research is stuck in 2005

Thomson Reuters Checkpoint and CCH IntelliConnect charge thousands per seat for clunky web portals. Meanwhile, your AI assistant has no access to authoritative tax sources. It guesses, hallucinates citations, and can't tell you where it found the answer.

$3,000+/seat

Legacy platforms charge enterprise prices for basic search. Small firms and solo practitioners get priced out of professional-grade research.

AI can't cite sources

ChatGPT and Claude are great at reasoning about tax law, but without access to real authorities, they fabricate section numbers and cite regulations that don't exist.

Stale data

Consumer tax tools use outdated information with no citations. When you're advising a client, you need authoritative, up-to-date sources you can verify.

How It Works

Set up in two minutes.

Connect taxmcp.io to your AI assistant, then ask tax questions the way you normally would. Every answer comes back with real citations.

01

Connect

Add taxmcp.io to Claude Desktop, ChatGPT, or your preferred AI tool. One URL, under two minutes, and you're researching.

02

Ask

Ask tax questions in plain English. “What are the QBI deduction requirements?” “Show me §199A.” Your AI searches the actual IRC, regs, and rulings.

03

Cite

Every answer includes the exact section number, source URL, and cross-references. Real citations you can verify and share with clients.

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Features

Built for accuracy.
Designed for practitioners.

Plain English Search

Ask questions the way you think about them. “Can my client deduct home office expenses?” returns the exact IRC sections, regs, and rulings that answer it.

Real Citations

Every result cites the exact section number with a link back to the official government source. No hallucinated references. No ambiguity. Citations you can put in a memo.

Cross-References

See how sections connect. When you look up §199A, instantly find every regulation, ruling, and related code section that references it, and everything it references.

Five Source Types

Internal Revenue Code, Treasury Regulations, 24+ IRS Publications, Revenue Rulings from 2003–present, and IRS Notices; all searchable from one place.

Always Current

Our system checks official government sources weekly for changes. You always get the latest version of the law, not last year's snapshot.

Works With Your AI

Connects to Claude Desktop, ChatGPT, and other AI tools. Your AI assistant gets real tax research capabilities built right in.

Who It's For

Built for tax professionals.

CPAs & Enrolled Agents

Research client positions faster with cited IRC sections, regs, and rulings, right inside your AI assistant.

Solo & Small Firms

Professional-grade tax research without the $3,000/seat price tag. Free to start, scales with your practice.

Tax Attorneys

Every answer links to authoritative government sources you can verify and cite in memos and opinions.

Pricing

Start free. Scale when ready.

Free for individual practitioners. Upgrade for unlimited access to every source.

Free

$0 /month

For individual CPAs, EAs, and tax professionals getting started with AI research.

  • 20 searches / day
  • Internal Revenue Code
  • Works with Claude & ChatGPT
  • Cited results
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Stop guessing.
Start citing.

Connect taxmcp.io to your AI assistant and get answers backed by the actual tax code. Free to start, takes under two minutes.